Stamp roller



FIG. 1 is a perspective view of a stamp roller in accordance with the present design in a closed position;

FIG. 2 is a front elevation view thereof, the rear view being a mirror image of FIG. 2;

FIG. 3 is a left side elevation view thereof, the right side being a mirror image of FIG. 3;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom view thereof;

FIG. 6 is an exploded front elevation view of the stamp roller of FIG. 1; and,

FIG. 7 is a left side elevation view of the stamp roller of FIG. 6.

The broken lines in the figures depict portions of the stamp roller that form no part of the claimed design. 

CLAIM The ornamental design for a stamp roller, as shown and described. 